The coprocessor thread stopped i

背景： 前端在查kylin时，scan timeout
CDH5.10 kylin1.6

错误如下：
2017-07-20 17:03:18,360 INFO org.apache.kylin.storage.hbase.cube.v2.coprocessor.endpoint.CubeVisitService: The cube visit did
not finish normally because scan num exceeds threshold
org.apache.kylin.gridtable.GTScanExceedThresholdException: Exceed scan threshold at 393073
at org.apache.kylin.storage.hbase.cube.v2.coprocessor.endpoint.CubeVisitService1CubeVisitService.callMethod(

原因3点：
说白了就是kylin关于hbase的3个参数：
kylin.query.scan.threshold
kylin.query.mem.budget
kylin.query.coprocessor.mem.gb
任何一个参数不达标都会报regionserver 都会报org.apache.kylin.gridtable.GTScanExceedThresholdException: Exceed scan threshold ，而前端查询kylin是timeout